dump/restore, how to reduce slice size
kes-kes at yandex.ru
Fri Sep 30 19:29:10 UTC 2011
Вы писали 30 сентября 2011 г., 4:11:15:
>> From owner-freebsd-questions at freebsd.org Thu Sep 29 14:37:35 2011
>> Date: Thu, 29 Sep 2011 22:36:38 +0300
>> From: =?windows-1251?B?yu7t/Oru4iDF4uPl7ejp?= <kes-kes at yandex.ru>
>> To: freebsd-questions at freebsd.org
>> Subject: dump/restore, how to reduce slice size
>> Hi, Freebsd-questions.
>> # df -h
>> Filesystem Size Used Avail Capacity Mounted on
>> /dev/ad4s1a 2G 206M 1.6G 11% /
>> devfs 1.0k 1.0k 0B 100% /dev
>> /dev/ad4s1e 3.9G 13M 3.6G 0% /tmp
>> /dev/ad4s1f 40G 25G 12G 67% /usr
>> /dev/ad4s1d 31G 3.6G 24G 13% /var
>> procfs 4.0k 4.0k 0B 100% /proc
>> /dev/ad2s1f 39G 25G 10G 71% /mnt
>> devfs 1.0k 1.0k 0B 100% /var/named/dev
>> as you can see /dev/ad4s1f is 40G and /dev/ad2s1f is 39G
>> but on ad4s1f only 25G used.
>> How can I dump /dev/ad4s1f and restore it on /dev/ad2s1f?
>> These commands:
>> #mount /dev/ad2s1f /mnt
>> #cd /mnt
>> #dump -0Lf - /usr | restore -rf -
>> does not help, because of ad2s1f does not have space to restore
>> 'end of ' /dev/ad4s1f.
>> May help any?
RB> ad2s1f already has 25 gigs of stuff on it. with ounly 14 gigs 'free'.
RB> ad4s1f has 25 gigs of stuff on _it_.
RB> The 25 gigs of ad4s1f will not fit in the 14 gigs of free space on
It is state after restoration. Before that I do the prestine file
mount /dev/ad2s1f /mnt
dump -0Lf - /usr | restore -rf -
at the end of restore process I got error about that on target file
system there is no inode xxxx. abourt? [yn]
I type 'n'. there are about 10 inodes missed.
when I compare files it seems that are same on source and target.
Is that Ok, may I do not worry about that error messages?
RB> *IF* the existing 'stuff' on ad2s1f is of no value, and the -only- thing
RB> you want to have on that filesystem is the 'copy' of ad4s1f,
RB> *THEN* there is 'simple' solution. You need to delete the files on
RB> ad4s1f -before- trying the dump/restor. In the commnds you show, above,
RB> fter the 'cd /mnt', and before the dump/restore, Type in 'rm -fr /mnt/*',
RB> but DO NOT hit the enter key. Look at what you typed, and make sure
RB> that there is no white-spce immediately before the '*'. Double check
RB> that there is no whitespce after the first '/'. or before the 2nd one.
RB> TRIPLE CHECK that there are no spaces before the '*'. Have you made
RB> a full back-up of the system recently? If not, abort this commqnd, and
RB> make the full backup before trying this again.
RB> *IF* you are absolutely certain you have typed the commnd correctly, _and_
RB> you have current full-system backup, then go ahead nd press the enter
thank you for attention. I understand that.
RB> As my friend Dante Brown once remarked:
RB> "All hope abandon
RB> ye who press Enter
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